URBANCOVÁ, Gabriela, Martin URBANEC, Oliver HAMIL and Jiřina ŘÍKOVSKÁ STONE. Braking index of isolated pulsars. Physical Review D. US - Spojené státy americké, 2015, vol. 91, No 6, p. "063007-1"-"063007-9", 9 pp. ISSN 1550-7998. Available from: https://dx.doi.org/10.1103/PhysRevD.91.063007.
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Basic information
Original name Braking index of isolated pulsars
Authors URBANCOVÁ, Gabriela, Martin URBANEC, Oliver HAMIL and Jiřina ŘÍKOVSKÁ STONE.
Edition Physical Review D, US - Spojené státy americké, 2015, 1550-7998.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1103/PhysRevD.91.063007
UT WoS 000351428400001
Keywords in English rotating relativistic stars; braking index; equation of state
Tags EE2-3-20-0071, , GPP209-12P740
Tags International impact, Reviewed
Links EE2.3.20.0071, research and development project. GPP209/12/P740, research and development project.
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 14/4/2021 15:45.
Abstract
Isolated pulsars are rotating neutron stars with accurately measured angular velocities Omega, and their time derivatives that show unambiguously that the pulsars are slowing down. Although the exact mechanism of the spin-down is a question of detailed debate, the commonly accepted view is that it arises through emission of magnetic dipole radiation (MDR) from a rotating magnetized body. The calculated energy loss by a rotating pulsar with a constant moment of inertia is assumed proportional to a modeldependent power of Omega. This relation leads to the power law (Omega) over dot = -K Omega^n where n is called the braking index. The aim of this work is to determine the deviation of the value of n from the canonical n = 3 for a star with a frequency dependent moment of inertia in the region of frequencies from zero (static spherical star) to the Kepler velocity (onset of mass shedding by a rotating deformed star), in the macroscopic MDR model. We use microscopic realistic equations of
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